KR880001428Y1 - Power switching device - Google Patents

Abstract

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Description

Power switchgear

1 is a side view showing a conventional power switch.

Figure 2 is a side view showing an embodiment of a power switch according to the present invention.

Figure 3 is a side view showing another embodiment of the present invention.

Figure 4 is a side view showing another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: lightning arrester 2 ': disconnector support insulator

4: fixed contactor of disconnector 5: movable contactor of disconnector

6: drive mechanism of disconnector 7: drive insulator of disconnector

9: common support 10: breaker of the breaker

15, 7b: Absorber 16: hypothesis

16 ': Trailer

The present invention relates to a switchgear, a disconnector and a circuit breaker configured to be independently of each other adjacent to each other, each electrically connected switch configured electrically.

The conventional power switchgear is shown in FIG. In the figure, (1) (1 ') is a temporary stand, (2) is arranged on a temporary stand (1') and an arrester having a terminal (2a), (2 ') (3) is a temporary stand (1). The support insulator (4) is a fixed contactor supported by the support insulator (2 '), (5) is a movable contactor that can be folded with the fixed contactor (4), (6) is a support insulator (3) It is a drive mechanism supported by, and is mechanically connected with the movable contactor 5.

(7) is a drive insulator installed on the temporary stand (1) at a predetermined interval from the support insulator (3) and driven by a drive source (not shown), and the movable contact (5) by the drive mechanism (6) Open and close drive.

Moreover, the disconnecting device operating mechanism 8 was comprised by the drive mechanism 6 and the drive insulator 7. As shown in FIG.

Reference numeral 9 denotes a support insulator, and 10 is supported by the support insulator 9 as a blocking portion of the insulated gas circuit breaker having terminals 10a and 10b. Reference numeral 11 denotes an electric wire connected to the terminal 2a, 12 a connecting wire connected between the movable contactor 5 and the terminal 10b, and 12 'a connection between the terminal 2a and the fixed contactor 4. One connecting line, 13, is a wire connected to the terminal 10a, and 14 is a shutoff mechanism activating closing and closing operation of the blocking unit 10 through an operating rod (not shown) in the support insulator 9. to be. Conventional electric power switchgear composed of lightning arrester, disconnector and breaker which are electrically connected to each other is configured as described above. Installation work of the temporary arrester 1 'on the arrester side, the temporary restraint 1 on the disconnector side, the breaker operating mechanism 14 of the breaker, and the support insulator 9, and the connecting line 12, 12'. And the temporary stand 1 on the disconnector side, the temporary stand 1 'on the arrester side, the breaker operating mechanism 14 of the circuit breaker, and the support to facilitate the connection work between the drive mechanism 6 and the terminal 10b. Installation work of the insulator 9 and the like, connection work of the connection line 12, the drive mechanism 6 and the terminal 10b, and connection work of the connection line 12 'with the arrester terminal 2a and the fixed contactor 4 The temporary stand 1 on the disconnector side, the temporary stand 1 'on the arrester side, the arrester 2, the support insulator 3, the drive mechanism 6, and the breaker side manipulator. 14, the support insulator (9), it was usually has to sufficiently secure a space between the blocking portion 10.

However, as the gas insulated switchgear containing the disconnector and the breaker in the common gas tank is spreading, the problem of the installation area of the temporary stand, which is one of the advantages of the gas insulated switchgear, is as described above. Was also requested.

Therefore, in order to satisfy this request, in the switchgear of FIG. 1, the arrester side, the disconnector side, the disconnector side, and the breaker side are brought close to each other, and the clearance distance between the arrester side and the disconnector side, and If the space distance between is shortened, the distance between the temporary stand 1 (1 ') of the ground potential and the terminal 10b of the high potential and the breaker 10 are cut off. Since the distance between the drive mechanism 6 of the disconnector and the terminal 10a of the breaker is shortened, a closed end cannot be sufficiently secured, so that the disconnector side and the breaker side You can't really get close to the space distance, and you need a fairly large space.

The present invention has been devised in consideration of such a situation, and in the power switchgear composed of an arrester, a disconnector, and a breaker independently configured as described above, the fixed contactor of the disconnector is supported by the arrester, and one support insulator of the disconnector is The support structure of the breaker has a common structure, the distal end of the other supporting insulator of the disconnector and the drive mechanism of the disconnector, and the common support insulator has a common structure, and the tip of the other support insulator of the disconnector and the drive mechanism of the disconnector, By configuring the common supporting insulator tip to be in substantially the same position in the vertical direction, it is possible to reduce the installation area of the power switchgear, and further improve workability such as installation work and connection work. It is possible to secure enough space insulation distance, and its structure is simple, which is advantageous for transportation, and low cost It is an object of the present invention to provide a power switchgear composed of an arrester, a disconnector and a breaker independently configured for each other.

An embodiment of the present invention will be described.

Figure 2 shows an embodiment of the present invention, in Figure 2, (2) is a lightning arrester, (2a) is a lightning arrester terminal, (4) is a U-shaped fixed contactor of the disconnector and the arrester (2) Is electrically and mechanically attached to the terminal 2a of the terminal.

Denoted at 5 is a rod-shaped movable contactor of the disconnecting device, which is driven vertically up to the one-dot chain line display position, and the fixed contactor 4 is inserted while being twisted about the shaft center and opened while being twisted.

Reference numeral 6 denotes a drive mechanism, which has a function of causing the movable contact 5 to be driven in a vertical direction or torsional movement in response to the rotational movement of the drive insulator 7.

The drive of the drive insulator 7 is driven by a drive source (not shown). Since the drive source, drive insulator 7 and drive mechanism 6 can be used as they are known in the art, the drawings and description of the structure are omitted.

(7a) is a metal support arm for rotatably supporting the drive insulator (7), (8) is a disconnecting device operating mechanism composed of a drive mechanism (6) and a drive insulator (7), (9) a hollow vertical common support insulator, Denoted at 10 is a vertical arrangement blocking portion of the insulated gas circuit breaker, 10a is a triple insulator of the insulated gas circuit breaker, and 10b is a lower terminal of the breaker, and the flat conductive metal contact plate is horizontally protruded at the side thereof. 10c) is integrally formed.

On the connecting plate 10c, the drive mechanism 6 of the disconnecting device is fixed by a bolt or the like.

Furthermore, the connecting plate 10c may be integrally installed on the driving mechanism 6 and may be detachably installed on the lower terminal 10c by bolts or the like.

In addition, the drive mechanism 6 and the lower terminal 10b may both be detachably installed with bolts.

Denoted at 11 is an electric wire connected to the arrester terminal 2a, and 13 is an electric wire connected to the upper terminal 10a of the breaker. 10b), the vertically arranged movable and fixed contactors (not shown) in the blocking section 10, the lower terminal 10a, the connecting plate 10c, the disconnecting drive mechanism 6, the disconnecting device movable contactor 5, the fixed contactor ( 4) Power is supplied to the power load (not shown) via the arrester terminal 2a and the electric wire 11. (14) is a circuit breaker drive source for inputting and blocking the movable contact in the breaker 10 through an operating rod (not shown) vertically arranged in the common support insulator (9), (15) of the fixed contactor (4) of the disconnector It is an adapter for adjusting height, and the lightning arrester 2 was fixed to this upper surface by the bolt.

Reference numeral 16 denotes a common hypothesis on which a flat horizontal top face 16a is formed. The arrester 2 is vertically fixed to the horizontal top face 16a through an adapter 15 by a bolt or the like. (9) is also fixed vertically with a bolt or the like, and the circuit breaker drive source 14 is also fixed with a bolt or the like.

Furthermore, the disconnector movable contactor 5 is disposed such that the upper end of the arrester 2 and the upper portion of the driving insulator 7 and the upper portion of the common support insulator 9 are positioned on the same horizontal plane and in the same straight line. Is in a substantially horizontal state while the input contactor 5 has a maximum open angle θ with respect to the horizontal plane of the horizontal plane as indicated by a dashed line, so that the space insulation distance from the upper terminal 10a of the circuit breaker is lower than 90 °. We secure enough. The drive mechanism 6 and the movable contactor 5 of the disconnector are connected to the upper and lower ends of the support insulator 9 through the connecting plate 10c, the lower terminal 10b and the drive insulator 7, and the support arm 7a. Is supported. Furthermore, the support arm 7a is fixed to the lower part (metal part) of the common support insulator 9 by bolts or the like, but may be fixed to the shutoff mechanism driving source 14 or the like by bolts or the like.

In addition, the opening and closing direction of the movable contactor (not shown) of the circuit breaker and the moving direction of the operating rod (not shown) are both vertical and at the same time the common support insulator 9 and the blocking part 10 are concentric. The force at the time of interruption of closing of the breaker is prevented from acting as a force (horizontal direction force) bending against the common support insulator 9. The power switching device of FIG. 2 not only electrically connects the disconnecting drive mechanism 6 and the lower terminal 10b of the breaker but also mechanically connects the disconnecting mechanism to the common support insulator 9 supporting the breaker 10. Since the mechanism 6 is supported, the upper terminal of the drive mechanism 6 and the breaker of the breaker is compared with the case where the arrester, disconnector, and breaker are simply disposed in the conventional power switchgear shown in FIG. A sufficient space insulation distance with (10a) can be ensured, and therefore a disconnector and a breaker can be close enough.

In other words, the installation area can be reduced to ten minutes.

In addition, since the support insulators 2 'and 3 of the disconnecting device are not required in the conventional method shown in FIG. 1, the fixed contact point of the disconnecting device is supported by the arrester, and since the arrester and the circuit breaker are installed in a common construction platform, At the same time, the installation work can be made narrower, so that the disconnector support insulator (2 ₁ ) (3) is not necessary.

In addition, since the connection between the arrester, disconnector, disconnector, and breaker does not need to be connected by connecting lines 12 and 12 'as in the conventional art shown in FIG.

In addition, in the conventional configuration shown in FIG. 1, even if the height of the place of installation of the disconnector is different from that of the circuit breaker, there is no problem because the wire 13 is normally flexible, but in the second embodiment, the height is different. If the arrester, disconnector, and breaker are installed on a common construction target, there is a possibility of excessive force on the mechanical connection or disconnection of the disconnector. The vertical alignment with the distal end of the common support insulator 9 can be easily performed irrespective of the yoke condition of the installation place, and therefore the fixing of the disconnecting device and the positioning contact of the movable contactor 4 or 5 or the disconnecting device There is no problem in aligning the position of the drive mechanism 6 and the connecting plate 10c.

3 is a view showing another embodiment of the present invention, in which the lower end of the driving material 7 is supported on the common hypothesis 16 through the height adjusting adapter 7b.

4 is a view showing another embodiment of the present invention, where the common hypothesis is the case of the trader 16 ', 17 is a low pressure cubicle, 18 is a transformer 19, and a transformer bushing. The wire 13 is connected to the tip.

Furthermore, in the examples shown in FIGS. 2 to 4, only one phase is displayed in all, but in practice, the power switchgear having the same configuration is provided in three phases in the inner direction of the drawing.

The present invention is to arrange the arrester, disconnector and breaker adjacent to each other as described above adjacent to each other and to electrically connect them, and at the same time vertically arrange the support insulator of the arrester and disconnector, the drive insulator of the disconnector and the support insulator of the breaker In the power switch configured to support the disconnector at the distal end of the support insulator of the disconnector and the breaker at the distal end of the support insulator of the breaker, the fixed contactor of the disconnector is supported by the arrester and the one side of the disconnector and the insulator of the breaker The structure of the power switchgear can be reduced because the other end portion of the disconnecting device, the drive mechanism of the disconnecting device, and the tip of the common supporting insulator are formed at approximately the same position in the vertical direction. Furthermore, workability of installation work, connection work can be improved, and It is possible to secure the space insulation distance required between the circuit breaker and the circuit breaker for 10 minutes, and the structure is simple, which is advantageous in transportation, and it is possible to obtain a power switchgear composed of an arrester, disconnector, and circuit breaker independently configured at a low price. have.

Claims (6)

In an electric power switchgear configured by arranging independently formed arresters, disconnectors, and breakers, and electrically connecting them, one end is fixed to the temporary stand 16 and the other end of the arrester supporting the fixed contactor 4 of the disconnector ( 2) and the common support insulator 9, which is installed on the temporary stand 16 and equipped with the blocking unit 10 of the breaker at the tip, is vertically spaced apart by a predetermined distance, and the driving insulator 7 is driven vertically. A drive mechanism 6 for opening and closing the disconnecting device movable contactor 5 to the fixed contactor 4 of the disconnecting device in accordance with the rotation of the insulator is provided between the common supporting insulator 9 and the supporting arrester 2 of the disconnecting device fixing contactor 4. At the same time, the drive mechanism 6 of the disconnector is connected to and supported by the distal end of the common support insulator 9, and the support part 6 of the arrester 2 supporting the fixed contactor 4 of the disconnector and the drive mechanism 6 of the disconnector are commonly supported. Move the distal end of the insulator 9 in the vertical direction Power opening and closing device for a characterized in that it is presented position. 2. The power switch according to claim 1, wherein an end portion of the disconnecting device is connected to an end opposite to the drive mechanism 6 of the insulator 7 of the disconnecting unit. Device. 2. The power switchgear according to claim 1, characterized in that an end side opposite to the drive mechanism (6) of the drive insulator (7) of the disconnector is provided on the temporary stand (16). 2. An adapter (15) (7b) according to claim 1, wherein an end opposite to the drive mechanism (6) of the drive insulator (7) of the disconnector and the opposite end of the fixed contactor (4) of the disconnector supported by the arrester (2) Power switchgear, characterized in that installed on the common hypothesis 16 through. 4. The power switchgear according to claim 2 or 3, wherein the opposite end of the disconnecting insulator (7) and the common support insulator (9) are provided on a common temporary stand (16). The power switchgear according to claim 5, wherein the common tentative pole (16 ') is a trailer.